@khurtwilliams A few thoughts and questions about your bike. What's the terrain you're riding on? Is it pavement or trail? If both, what's the ratio? I ask because, regarding the bounciness you're experiencing you way be well served by lowering your tire pressure. What is it currently? My suggestion is run it as low as you can for maximum comfort. If you're on a mix of pavement and trail, try 20psi. If mostly trail, try 10 to 15. My fat tire bike pressure for trail and gravel roads is usually 8 to 10psi. Right now it's 5psi. But that's a non-powered bike that weighs 30lbs. For a heavier e-bike I'd keep it above 10. It will give you a much softer ride. The primary negative impact is that it will lower your range a bit. Experiment. If I recall those are rated for 35-55 miles. I was getting 35-40 with my 1st generation Lectric. If you're doing a 20 mile trip you would likely be fine with 15psi.

Looking at the photo, your bag and the rear basket, my suggestion is getting a little net or a couple bungee cords. I always use something to strap in anything I'm carrying. And that basket looks pretty shallow. Strap it in and you'll never have to worry. I've ridden thousands of miles without incident.

Regarding weight, yes, these are heavy bikes and the foldable aspect is difficult with all that weight. Mine is about 68 lbs. and they're not THAT small! And clumsy to maneuver. I think the ideal situation as that they be lifted into low spaces but kept upright. Not many cars will have the needed height, probably only taller hatchbacks. Most cars probably require tilting to the side making it even more difficult.

All that said, how healthy are you? When I bought my first two e-bikes I did so assuming that my knee injury of any decades would be an ongoing issue. I thought I needed the e-assist. After 4 months of riding I'd grown confident that I was wrong and that I could ride without the e-assist. I took a chance and bought my fat bike. Best decision I could have made. If you're in good health I'd guess you'd have no problems with a 10 to 20 mile ride. I was a fairly healthy person and had no problems with 20 mile rides and within a few months was regularly doing 35 to 45 miles rides. The hardest part was seat comfort. Takes a bit of time to get used to longer rides.

There are quite a few foldable bikes, non-powered, that are in the 25-35 lb range and will be much easier to tote around in a car!